system32.exe is a virus....go here and do an online virus check up
http://housecall.trendmicro.com/ it will check it and clean it for you... you can also do this...
1.live update your norton (recomended but isn't important...
2. star your windows on safe mode - press F8 when the computer starts and choose safe mode
3.click start-run-type "regedit" - click o
open: HKEY_Local_Machine then Software\Microsoft\Windows Nt\CurrentVersion\Winlogon
4. on the right side of the menu box scroll down and find "shell" and double click it
change the text in the box so it shows
"Explorer.exe
close all aplications and restart the computer
press F8 again when the computer shows it's stats only this time chose
"start windows normally